Control Address is the webswitch adress used in the CI-V protocol. If you have more control eq like HRD, RS-BA1 etc on the same bus all need to have different addresses. If the WS is the only just keep e1

Thanks Mike,using WS at the remote side for antenna selection and will fed the bus via CI-V Interface and RCC 1258 COM2 to the control side to use it with WSJT-X for frequency control The program does not ask for any CI-V adress.... so I can keep it as you mentioned before